<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <script type="application/javascript" src="jquery-3.2.1.min.js"></script>
  <script type="application/javascript" src="index.js"></script>
  <style>
    * {
      margin: 0px;
      padding: 0px;
    }

    .top-head {
      position: fixed;
    }
    .click_button {
      float: left;
      cursor: pointer;
      margin-left: 10px;
      background: goldenrod;
    }
  </style>
</head>
<body>
<div class="top-head">
  <div class="click_button button1" id="1">第一屏</div>
  <div class="click_button button2" id="2">第二屏</div>
  <div class="click_button button3" id="3">第三屏</div>
  <div class="click_button button4" id="4">第四屏</div>
</div>
<div class="section" style="background: red; width: 100%; height: 100%">

</div>
<div class="section" style="background: green; width: 150%; height: 100%;">

</div>
<div class="section" style="background: yellow; width: 100%; height: 150vh">

</div>
<div class="section" style="background: gray; width: 100%; height: 100%;">

</div>

</body>
</html>